Oven construction



Nov. 4, 1930. w, MILLER OVEN CONSTRUCTION Filed May 16, 1929 KK \\\\\\\\\\\v\\\\\\\\\\v INVENTOR. MM? M15? ATTORNEY.

Patented Nov. 4, 1930 UNITED STATES PATENT OFFICE WILLIAM G. MILLER, 01 DETROIT, MICHIGAN, 'ASSIGNOR TO THE R. o. MAHON coM- PANY, F DETROIT, MICHIGAN,

A CORPORATION OLE MICHIGAN OVEN CONSTRUCTION Application filed May 16,

This invention relates to oven constructions and the object of the invention is to provide an oven formed from standard sections having peripheral flanges adapted to be bolted together to produce a completed oven.

A further object of the invention is to provide sections or panels consisting of outer and inner sheet metal flanged plates enclosing an insulating material and secured together at the flanges to provide an oven panel or unit ready to be bolted to an adjacent unit.

Another object of the invention is to provide an oven unit consisting of two metal plates having interengaging flanges which are locked together to hold the plates and insulating material in proper relation when used as single units or assembled to provide an oven.

A further object of the invention is to provide an oven which may be set up or taken down with one hundred percent salvage.

These objects and the several novel features of the invention are hereinafter more fully described and claimed and the preferred form of construction by which these objects are attained is shown in the accompanying drawings in which Fig. 1 is an elevation of one end of an oven embodying my invention. I

Fig. 2 is an enlarged section taken on line 2-2 of Fig. 1. r

Fig. 3 is an enlarged section taken on line 3-3 of Fig. 1.

Fig. 4 is a view showing the interlocking of the flanges of each unit.

As shown in Fig. 1 the oven comprises a series of side wall units 1v which are bolted together to form the side walls of the oven. A series of horizontal units 2 are also provided extending across and bolted to the side walls to form the top of the oven. Each side wall unit comprises an inner sheet metal base plate 3, shown in Figs. 2, 3 and 4:, and having an upwardly extending peripheral flange 4 about the four sides thereof as shown. The receptacle thus formed is then partially filled with insulating material 5 and the outer plate 6 is positioned thereover. This outer plate 6 is provided with an upwardly extending peripheral flange 7 which fits within the flange 1929. Serial No. 363,700.

the flange at. These flanges 1, 7 and 8are apertured to receive the bolts 9 and as will be noted from Fig. t the flange 7 is provided with an aperture 10while the flange 1 is provided with a considerably larger aperture 11. Informing the aperture forthe bolt 9 in the return bent flange 8 the metal is extruded at 12 into the aperture 11 of the flange 4, as shown, thus locking thereturn bent flange of the plate 6to the flange 1 of the plate 3. In this way the units may be built up for the oven and kept in stock in various unit sizes to provide different sized ovens.

In other words the side wall and roof units are complete in themselves and are made in difierent' standard sizes and any standard size oven may be built up with units of this type. The roof units are made up in the same manner as the side wall units with the exception of the ends. 'At the ends, as shown in Fig. 3, the inner plate 3 is carried out straight while the outer plate 6 is bent downwardly at 13 and thence outwardly at 14 to provide areturn bent flange engaging over the end of the plate 3. The return bent edge 15 of this flange is bent over the end of the plate 3 during the assembly of the roof unit and in assembling the units in an oven an asbestos gasket 16 is positioned between the edges of the roof units and wall units and these units are secured together by the bolts 9 as shown. An asbestos gasket 17 is also utilized between the side wall units when they are secured together by the bolts 9 in building up the oven and when the oven is completed'a metal face plate 18 is secured to the front face of the oven by the bolts 9. It will be noted that in this oven the insulation is entirely sheathed in metal so that theoven may be flushed out with water without damaging the insulation. This oven may be taken down by removing the bolts 9 and set up elsewhere with one hundred percent salvage as even the asbestos gaskets 16 and 17 may be saved as well as the bolts 9 and the diiferent wall and roof units.

From the foregoing description it becomes evident that this construction is very simple LUV rably to the assembly of standardized ovens, provides an oven which may be easily set up or taken down and provides a device which accomplishes the objects described.

Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States isl. I11 an oven construction, an oven unit comprising a sheet metal base member having upturned flanges at the edges, a second sheet metal member having return bent flanges at the edges engaging over the flanges of the base member, the interengaging flanges being apertured, and the metal of one flange being extruded at the apertures to lock the flanges together,,the space between the sheet metal members being filled with insulating material. 7

2. In an oven construction, an oven unit comprising a sheet'metal base member having an upturned peripheral flange, a second sheet metal member having a return bent peripheral flange engaging over the flange of the base member, the base member being provided with a series of bolt holes in its flange and the second member being provided with a series of companion bolt holes in the return bent flange, the metal of the return bent flange being extruded into the bolt holes of theabase flange to secune the two sheet metal members together.

3. In an oven construction, an oven unit comprising a sheet metal base member having upturned side flanges, the base member beingscovered with insulating material, asece nd sheet metalmember positioned on the insulating material and having return bent flanges engaging over the flanges of the base member,the interengaging flanges being upertured and the metal about the apertures;of one flangebeing extruded into theapertures otthe other flange. a.

4. In an oven construction, anoven .unit comprising a sheet metal base member having upturned flanges at the .edges,.a second sheet metal member having return bent flanges engaging over the flanges ofitherbase member, the interengaging flanges being ape ertured, and the metal of one flange being extruded into the apertures to lock the flanges together, and a heat insulating medium between the sheet metalmembers.

5. In an oven construction, anoven unit comprising a sheet metal base member having an upturned peripheral flange, a second sheet metal member having a return bent peripheral flange engaging over the flange of the base member, theinterengagingflanges being provided with boltholes and the metal of one flangeat the bolt holes beingextrudedto lock the flanges together.

6. In an oven construction, a seriesof wall and root units adapted :to be secured together to form an oven,.each unit ioomprisedges and flanges of assembled units and means locking the flanges together including a bolt passing through the said flanges and the intervening insulating material.

In testimony whereof I sign this specification.

WILLIAM G. MILLER. 

